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2002122 = 232111229
BaseRepresentation
bin111101000110011001010
310202201101200
413220303022
51003031442
6110525030
723006043
oct7506312
93681350
102002122
111148251
12806776
135513b5
143a18ca
1529834c
hex1e8cca

2002122 has 12 divisors (see below), whose sum is σ = 4337970. Its totient is φ = 667368.

The previous prime is 2002093. The next prime is 2002151. The reversal of 2002122 is 2212002.

It is an interprime number because it is at equal distance from previous prime (2002093) and next prime (2002151).

It can be written as a sum of positive squares in only one way, i.e., 1687401 + 314721 = 1299^2 + 561^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55597 + ... + 55632.

22002122 is an apocalyptic number.

2002122 is an abundant number, since it is smaller than the sum of its proper divisors (2335848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2002122 is a wasteful number, since it uses less digits than its factorization.

2002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111237 (or 111234 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2002122 is about 1414.9636037722. The cubic root of 2002122 is about 126.0366484475.

Adding to 2002122 its reverse (2212002), we get a palindrome (4214124).

The spelling of 2002122 in words is "two million, two thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 18 111229 222458 333687 667374 1001061 2002122